Switch settings examples

1. Switch settings examples

1.1. Default settings

Description of communication:

User traffic entering the ETH 1 can be output to a remote station
from ETH 1 or ETH 2. Additionally, packets entering ETH 2 can be output
to a remote station from ETH 1 or ETH2.

Ports ETH1 to ETH2 are not interconnected. The menu “VLAN / Member
/ p2, p4”.

The link is transparent for the untagged and tagged frames that
are queued according to their priority. The menu “VLAN / VTU priority
override / none”.

Management of units is possible from any port. “Management VLAN”
is disabled by default and when turned on, the switch does not need to
be set.

Internal traffic uses the “Internal VLAN” and has the highest
priority set (7). It is queued number 3, again with the highest
priority. Valid for “Link settings / Service access / Services / Service
channel = standard”. When “Service channel = direct” is set, internal
operation with unit IP addresses is performed, without default priority
setting.

1.3. Prioritization according to the VLAN ID

Description of communication:

Frames in this VLAN will then pass through the link with a higher
priority. After passing through the link the frame retains this new
priority. Menu “VLAN / 802.1q / fallback”, “VLAN / VTU priority override
/ frame”

Setting procedure:

Only set on Local, Remote can be adjusted in the same way if
needed.

Local: Step 1, Step 2, Step 3

Step 1

In table STU the item with number SID = 1 is prepared for
reference in VTU table.

Step 2

Step 3

Selecting “802.1q = fallback mode” for the Eth2 and Eth1 port
means that the framework prefers to use its own VID when it is contained
in VTU (Step 2). The “VTU priority override = frame” causes the frame
leaving the RAy unit to have a priority according to VTU table
content.

For the “VLAN ID = 10” priority 6 is set. Packets queued with the
highest priority (default priority 6 and 7) should never have a higher
bit rate than that which is available “in the air” for the lowest
modulation ACM. Priorities 6 and 7 also use internal communication
packets that are necessary for the link!

Step 2, Local

Step 3, Remote

Step 4, Remote

“ATU settings / DA priority override / queue”

For the MAC address 02: 21: 70: 93: d1: 78 the priority 5 is set.
Packets in the queue with the highest priority (default priority 6 and
7), should never have a higher data rate than the “air” for the lowest
modulation ACM. This priority/queue using packets of internal
communications that are required for the link!

1.5. Two separate customers

Fig. 1.5: ETH1, ETH2 separated

Description of communication:

For two separate customers – ETH 1 and ETH 2; management unit is
possible from all ports, management VLAN is not set.

Packets from port ETH 1 are packed into VLAN 100 and transferred
to the other side of the link, where they are unpacked and sent in their
original format on the ETH 1. Similarly, packets from port ETH 2 are
packed into VLAN 200.

Internal communication is also packed in VLAN 300 to set the
highest priority.

Setting procedure:

Step 1: STU table

Step 2: VTU table

Step 3: VLAN

The opening image is simplified to show separation of user
traffic. The following figure show the more precise route packets in the
VLAN. The diagram highlights the way in which management packets from
ETH1 through one VLAN pass towards the CPU. It also highlights packets
pass in the other direction from the CPU:

Fig. 1.6: ETH1, ETH2 separated

1.6. Separation of unit management from customer traffic

Fig. 1.7: Management separated

Description of communication:

Packets from port ETH 1 are packed into VLAN 100 and transferred
to the other side of the link, where they are unpacked and sent in their
original format on the ETH 1. These packets can not go to the CPU nor
the ETH2 port. Similarly, packets from the EHT 2 port are packaged in
the VLAN 200 and can be transferred to the CPU or ETH2 on the opposite
side.

Additionally, internal communications are packaged in the VLAN 300
with the highest priority set.

Setting procedure:

Step 1: STU table

Step 2: VTU table

Step 3: VLAN

The opening image is simplified to show the traffic separation. As
with the separation of two customers, the packets go in the direction to
the CPU via VLAN ID 200 and back are packed into the VLAN ID 300.